My right corne not working without TRRS and nice!nano v2 led not working after flash firmware

[mellow umbra]

Problem #1: My keyboard only works when using both sides or only the right side. If I connect the wire to the left side only, the keyboard doesn't work.

Problem #2: My nice!nano v2 worked fine at first. After losing connection while flashing the firmware, it no longer lights up when using one side, even though I have re-flashed the firmware a few times. And if using 2 sides with TRRS, the leds sometimes work, sometimes not and it is not synchronized with the other side.

Firmware source: https://github.com/bakansm/corne-v3-zmk-config

[wintry vector]

nice!nano does not support trrs. if you have batteries in there, absolutely do not use trrs. if not, it's probably not providing enough power for both the leds and the board. try turning off the rgb underglow (looks like you've got &rgb_ug RGB_TOG in your keymap) and see if the rest of the board functionality works.

[mellow umbra]

i tried connecting the 2 sides with 2 type c wires. The microcontroller on the right is faulty and does not light up. And the one on the left can't be typed

oh i realized something new that the right micro controller needs to sleep, then wake up and the light will work

[wintry vector]

those controllers don’t look like nice!nanos O.o

[mellow umbra]

it's a clone of nice!nano v2, I can't buy official nice nano from my country

[mellow umbra]

I use this

[wintry vector]

those silkscreen pin numbers don’t look like they correspond with all of the nice!nano pin aliases. is there a spec sheet for it?

oh, maybe P1 is +32

and it looks like a 5V pin instead of 3.3V

[mellow umbra]

maker told me its pinout is the same as nice!nano v2, and the voltage supports 3V-5V

[mellow umbra]

after reflashing bootloader, the problem is fixed, thanks for help

[wintry vector]

did that require special hardware?

[mellow umbra]

no, i used adafruit-nrfutil

[wintry vector]

ah cool. i would not have thought of that being the problem.